[f. JAG v.1 + -ER1.] One who or that which jags; spec. a jagging-iron, also a toothed chisel.

1

  In quot. 1562, prob. error for iagges: see JAG sb.1 4.

2

[1562.  Turner, Herbal, II. H j a. Lupine hath … a lefe with v. or seuen iaggers, which altogether, when as they are growen out, haue the lykenes of a ruel of a spor, or of a sterr.]

3

1825–80.  Jamieson, Jagger, a prickle, that which jags. Fife.

4

1864.  Webster, Jagger,… a jagging-iron.

5

1875.  Knight, Dict. Mech., Jagger … 2. A toothed chisel.

6

1892.  Voice (N.Y.), 15. Sept. Mix the eggs with flour … cut them the shape of a long narrow leaf … cut them with a jagger so they will be notched.

7